ASTROSAT CZTI

Data Quality Report

Orbit 52463

Creation date: 2025-06-28T09:26:01.967385
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A13_037T01_9000006476_52463cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52463cztM0_level2_quad_clean.evt
Size (bytes)801,751,68084,504,960
Size764.6 MB 80.6 MB
Events in quadrant A3,169,863675,133
Events in quadrant B3,515,286714,977
Events in quadrant C6,054,860607,979
Events in quadrant D16,407,50781,859

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144550
B0152630
C0226850
D0533770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6821460.674388%
B68211291.891218%
C682268310.011727%
D68226822100.000000%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7651 6822 3 3 0.04% 0.04%
B 7651 6822 33 33 0.43% 0.48%
C 7652 6823 525 525 6.86% 7.69%
D 7652 6823 5660 5660 73.97% 82.95%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 3 14 129576 698.95 743 726 184.3
A 4 3 32431 171.99 743 726 184.3
A 11 3 28002 147.96 743 726 184.3
B 4 81 172911 1087.92 732 706 158.3
B 4 171 129631 814.5 732 706 158.3
B 7 252 65464 409.12 732 706 158.3
C 4 5 1644540 8678.85 692 687 189.4
C 15 224 712741 3759.34 692 687 189.4
C 2 12 296084 1559.57 692 687 189.4
D 15 93 15554196 466734.39 109 104 33.3
D 12 17 150187 4503.57 109 104 33.3
D 6 42 86832 2602.46 109 104 33.3

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter